/* USER CODE BEGIN Header */
/**
 ******************************************************************************
 * @file    stm32f4xx_hal_timebase_TIM.c
 * @brief   HAL time base based on the hardware TIM.
 ******************************************************************************
 * @attention
 *
 * <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
 * All rights reserved.</center></h2>
 *
 * This software component is licensed by ST under BSD 3-Clause license,
 * the "License"; You may not use this file except in compliance with the
 * License. You may obtain a copy of the License at:
 *                        opensource.org/licenses/BSD-3-Clause
 *
 ******************************************************************************
 */
/* USER CODE END Header */

/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx_hal.h"
#include "stm32f4xx_hal_tim.h"

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
TIM_HandleTypeDef htim9;
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/

/**
 * @brief  This function configures the TIM9 as a time base source.
 *         The time source is configured  to have 1ms time base with a dedicated
 *         Tick interrupt priority.
 * @note   This function is called  automatically at the beginning of program after
 *         reset by HAL_Init() or at any time when clock is configured, by HAL_RCC_ClockConfig().
 * @param  TickPriority: Tick interrupt priority.
 * @retval HAL status
 */
HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority)
{
	RCC_ClkInitTypeDef clkconfig;
	uint32_t uwTimclock = 0;
	uint32_t uwPrescalerValue = 0;
	uint32_t pFLatency;
	/*Configure the TIM9 IRQ priority */
	HAL_NVIC_SetPriority(TIM1_BRK_TIM9_IRQn, TickPriority, 0);

	/* Enable the TIM9 global Interrupt */
	HAL_NVIC_EnableIRQ(TIM1_BRK_TIM9_IRQn);
	/* Enable TIM9 clock */
	__HAL_RCC_TIM9_CLK_ENABLE();

	/* Get clock configuration */
	HAL_RCC_GetClockConfig(&clkconfig, &pFLatency);

	/* Compute TIM9 clock */
	uwTimclock = 2 * HAL_RCC_GetPCLK2Freq();
	/* Compute the prescaler value to have TIM9 counter clock equal to 1MHz */
	uwPrescalerValue = (uint32_t) ((uwTimclock / 1000000U) - 1U);

	/* Initialize TIM9 */
	htim9.Instance = TIM9;

	/* Initialize TIMx peripheral as follow:
	 + Period = [(TIM9CLK/1000) - 1]. to have a (1/1000) s time base.
	 + Prescaler = (uwTimclock/1000000 - 1) to have a 1MHz counter clock.
	 + ClockDivision = 0
	 + Counter direction = Up
	 */
	htim9.Init.Period = (1000000U / 1000U) - 1U;
	htim9.Init.Prescaler = uwPrescalerValue;
	htim9.Init.ClockDivision = 0;
	htim9.Init.CounterMode = TIM_COUNTERMODE_UP;
	if (HAL_TIM_Base_Init(&htim9) == HAL_OK) {
		/* Start the TIM time Base generation in interrupt mode */
		return HAL_TIM_Base_Start_IT(&htim9);
	}

	/* Return function status */
	return HAL_ERROR;
}

/**
 * @brief  Suspend Tick increment.
 * @note   Disable the tick increment by disabling TIM9 update interrupt.
 * @param  None
 * @retval None
 */
void HAL_SuspendTick(void)
{
	/* Disable TIM9 update Interrupt */
	__HAL_TIM_DISABLE_IT(&htim9, TIM_IT_UPDATE);
}

/**
 * @brief  Resume Tick increment.
 * @note   Enable the tick increment by Enabling TIM9 update interrupt.
 * @param  None
 * @retval None
 */
void HAL_ResumeTick(void)
{
	/* Enable TIM9 Update interrupt */
	__HAL_TIM_ENABLE_IT(&htim9, TIM_IT_UPDATE);
}

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
